The Corrido anejo to me is what a great anejo should be. Tons of character, very easy to enjoy neat and takes on a lot of the character from the barrel in which it was rested (bourbon in this case). Keep drinking it and you'll find a lot of complexity in it from the sweet (vanilla/caramel) to some fruit to some nice brown spices.
And with Penca Azul, you are talking about an AWESOME brand. The aged ones are almost buttery and the blanco is superb. You won't find many better than Penca Azul. I just find it hard to recommend because of price and because it's very hard to find since the brand no longer exists.